Pattern mechanism for looms



(No Model.) 2 Sheets-Sheet 1.

T. J. GORGORAN.- PATTERN MECHANISM FOR LOOMS.

No. 495,453. Patented Apr. 11, 189B.

Wiflnaoaeo 344 0014; tot

(No Model.) 2 Sheets-Sheet 2.

T. J. GORGORAN/ PATTERN MECHANISM FOR LOOMS.

No. 495,453. Patented Apr. 11, 1893.

FILE- I UNITED STATES PATENT Oiuucna THOMAS J. CORCORAN, OF PERU,INDIANA.

PATTERN MECHANISM FOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 495,453, dated April11, 1893. Application filed August 12, 1891. $erial No. 402,452. (Nomodel.)

To all whom it may concern:

Be it known that I, THOMAS J. COROORAN, a citizen of the United States,residing at Peru, in the county of Miami and State of Indiana, haveinvented certain new and useful Improvements in Pattern Mechanism forLooms; and I do hereby declare that the following is a full, clear, andexact description thereof, which, in connection with the drawings makinga part of this specification, will enable others skilled in the art towhich my invention belongs to make and use the same.

My invention relates to looms, and more particularly to the harness anddrop box mechanisms of the well known Knowles loom,shown and describedin the Reissue Letters Patent No. 7,784, of July 3, 1877. The object ofmy invention is to secure a greater range of adjustment in timing theparts of the harness and drop box mechanisms than, has heretofore beensecured on said Knowles loom, and to use a continuously moving patternchain, and to retain all the facilities for handling the harness anddrop box mechanisms which have heretofore been obtained on said loom.

My invention consists in combining with the gearing for driving thepattern cylinder, elliptical gears, intermediate the upper or lowercylinder gear, and the pattern cylinder gear, by means of which a fastand slow motion of the pattern cylinder is obtained, without interferingwith the continuous rotary motion thereof.

In the United States Letters Patent No. 398,328, of February 19, 1889,the pattern cylinder is driven by a pin wheel and star wheel mechanism,and by this construction a greater range of adjustment in timing theparts of the harness and drop box mechanisms is obtained than in theKnowles loom referred to, but in said pin wheel and star wheel mechanismthe pattern cylinder does not have a continuous rotary motion, but anintermittent motion, and when a heavy chain is used it causes a rackingof the head motion, and the loom does not run as smoothly as it should.By employing elliptical gears, intermediate one of the cylinder gearsand the pattern cylinder gear, I accomplish the same result sought forin said Patent No. 398,328, and at the same time retain the feature ofthe continuously rotary pattern cylinder shown inthe Reissue Patent No.7 ,7 84, above referred to.

The gearing for driving the pattern cylinder has usually been made insuch proportions that one revolution of the cylinder gear shaft movesthe pattern cylinder one angular space, to present one bar of thepattern chain to the vibrator lever. By means of elliptical gears, asabove described, I am enabled to impart a continuous alternate fast andslow mttion to the pattern cylinder; the fast motion causing the patterncylinder to change more quickly, an advantage which is well understoodby those skilled in the art. And further, by combining ellipticalgears,as above described, with circular gears, made in such proportionsthat the pattern'cylinder will be revolved twice the distance, that istwo bars of the chain instead of one bar, so that every other bar of thechain will be presented to act on the vibrator lovers of the harness ordrop box mechanisms, I am enabled to impart a continuous fast and slowmotion to the pattern cylinder, and to carry two separate patterns onsaid pattern cylinder, one pattern for weaving a portion of the fabric,and the other pattern for weavingthe other portion of the fabric. Forexample, in weaving blankets, one portion of the pattern chain, arrangedupon every other bar thereof, will be adapted to weave the body of theblanket, and the other portion of the pattern chain, arranged upon theremaining bars of the chain will be adapted to weave the end borders ofthe blanket. When the body'of the blanket has been woven, the operatorwill disconnect the driving gearing of the pattern cylinder gear, andmove said gear one bar by hand so as to bring into operation the portionof the pattern chain for weaving the border of the blanket; he will thenconnect the gearing, and the loom will weave the border of the blanket.

I have shown in the drawings a detached portion of the head of theKnowles loom, above referred to, sufficient to illustrate the nature ofmy improvements applied thereto.

Referring to the drawings:Figure 1 is a front side elevation of aportion of the head of the Knowles loom referred to, with myimprovements applied thereto, looking in the direction of arrow at, Fig.2, with some of the parts left off for the sake of clearness. Fi

2 is a plan View, looking in. the direction of arrow b, Fig. 1, and,Fig. 3 is a sectional detail on line 3, 3, Fig. 1, looking in thedirection of arrow 0, same figure.

In the accompanying drawings, 1 is the head frame, in the upper portionof which is journaled the upper cylinder gear 2, and in the lowerportion the lower cylinder gear 3.

4c is the pattern cylinder shaft, journaled in the frame 1, having thedriving gear 5 fast on one end thereof, in the usual way. Intermediatethe upper orlower cylinder gear, in this instance the upper cylindergear 2, and the pattern cylinder gear 5, is arranged a system of gearsfor driving the pattern cylinder gear 5 from the upper cylinder gear,said system of gears consist of two elliptical gears, and a circulargear which meshes with the pattern cylinder gear. One of the ellipticalgears 6, is in this instance fast on the shaft 2' of the top cylindergear 2. The other gear 7 of the pair of elliptical gears, is mountedloosely on a stud 8 secured to the frame 1, and is provided with anoutwardly extending hub 7, preferably made integral with the gear 7, asshown in Fig. 3, which is retained in place on the stud 8 by a screw 8secured in the end of said stud.

Mounted loosely on the hub 7' of the gear 7, is a circular gear 9, whichmeshes with the pattern cylinder gear 5. The circular gear 9 and theelliptical gear 11 are slotted to receive the projecting end 10 of thekey 10, which i is supported and adapted to slide freely in alongitudinal groove in the hub 7 of the elliptical gear 7, (see Fig. 3.)The sliding key 10 is provided with a head 10, by which it may be movedinto engagement with the key seat 9' in the circular gear 9, to couplethe circular gear 9 to the elliptical gear 7, or out of engagement withsaid key-seat 9 to uncouple said gear from the elliptical gear 7.

When the circular gear 9 is coupled to the elliptical gear 7, thepattern cylinder gear 5,

and the pattern cylinder shaft 4, will revolve in the directionindicated by arrow cl, Fig. 1, through the pair of elliptical gears 6and 7, and the circular gear 9, and by means of the elliptical gears,intermediate the cylinder gear and the pattern cylinder gear, acontinuous fast and slow motion is communicated to the pattern cylinder.

I have shown in the drawingsasecond pair of elliptical gears, (of thesame size as the first mentioned pair of elliptical gears,) combinedwith a second circular gear, which gears cause the pattern cylinder gearto be moved in the reverse direction, that indicated by the arrow 6,Fig. 1. The reverse motion of the pattern cylinder is controlled by thesliding key 10, in the same manner as set forth in said Patent No.398,328.

The elliptical gear 11 of the second pair of elliptical gears is looselymounted on the hub 7 of the elliptical gear 7, and is coupled with saidhub by means of the end 10 of the slidcircular gear 13 is in mesh withing key 10, registering with the key seat 11 in said gear, see Fig. 3. Acollar 16 is secured on the end of the hub 7 by a set screw 16', andholds the gears 9 and 11 on said hub, and also prevents the withdrawalof the sliding key 10.

The elliptical gear 12 of the second pair of elliptical gears, issecured upon the hub 13' of the circular gear 13 by a pin 14, and thecircular gear 13 is mounted loosely on a stud 15 secured in the head ofthe frame. The the pattern cylinder gear 5.

When the circular gear 9 is coupled to the elliptical gear 7, thepattern cylinder 5 will be driven in a forward direction, as indicatedby arrow 01, Fig. 1, but when the circular gear 9 is uncoupled, by themovement of the key 10, and the elliptical gear 11 is coupled to theelliptical gear 7, the pattern cylinder gear 5 will be driven in theopposite direction, as indicated by arrow 6, Fig. 1, through theelliptical gear 12 and the gear 13.

When the sliding key 10 is in the position shown in Fig. 3, itsprojecting end 10" does not register with the key seat 9' in thecircular gear 9, or the key seat 11 in the elliptical gear 11, but saidend 10 extends into a circular groove within the hubs of said gears 9and 11, and both of said gears are therefore free to turn on the hub 7of the elliptical gear 7, and the pattern gear 5, meshing with the gear9, may be turned in either direction, by the ordinary handle orhandwheel, not shown, attached to the pattern cylindershaft 4, independentlyof the elliptical gear 7 and the driving elliptical gear 6, in the sameman ner as shown in said Patent No. 398,328.

I am aware that prior to my invention, elliptical gears for driving theupright shaft of the head motion have been used, but the ellipticity ofsuch gears affects the whole head motion of the loom, and gives a continuous fast and slow motion to the cylinder gears, thus affecting theopening and closing of the shed, but in my improvements the continuousfast and slow motion communicated to the pattern cylinder is entirelyindependent of any fast or slow motion communicated to the cylindergears.

The advantages of my improvements will be readily appreciated by thoseskilled in the art, and the same may be combined with different looms inwhich it is desired to have a continuous fast and slow motion of thepattern cylinder for any purpose, independent of the fast or slow motioncommunicated to the cylinder gears.

It will be understood that the details of construction of myimprovements, and the arrangement of the system of gears intermediatethe upper or lower cylinder gear and the pattern cylinder gear, forcommunicating a continuous fast and slow motion to the pattern cylinder,may be varied somewhat if desired, and the shaft of the lower cylindergear may be used as the driver, and the elliptical gear attachedthereto, instead of to the upper cylinder gear as shown in the drawings.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-- a 1. In a loom, the combination with oneof the cylinder gears of the head motion, and the pattern cylinder gear,of gearing, consisting of elliptical gears, and circular gears,intermediate said cylinder gear and the pattern cylinder gear, forcommunicating a continuous fast and slow motion to the pattern cylinder,substantially as set forth.

2. In a loom, the combination with one of the cylinder gears of the headmotion, and the pattern cylinder gear, of a system of gears intermediatesaid cylinder gear and the pattern cylinder gear, for communicating acontinuous fast and slow motion to the pattern cylinder, said system ofgears having a pair of elliptical gears forming a part thereof,substantially as set forth.

3. In a loom, the combination with one of the cylinder gears of the headmotion, and the pattern cylinder gear, of a system of gears intermediatesaid cylinder gear and the pattern cylinder gear, for communicating acontinuous. fast and slow motion to the pattern cylinder, said system ofgears consisting of a pair of elliptical gears, one of said gears faston the shaft of said cylinder gear, and the other of said gears providedwith a projecting hub, and mounted loosely on a stud, and said stud, anda second pair of elliptical gears, one of said pair mounted on the hubof the second elliptical gear of the first mentioned pair, and

adapted to be coupled thereto, and the other elliptical gear fast on thehub of a circular gear, and said circular gear meshing with the patterncylinder gear, and a second circular gear loose on the hub of the secondelliptical gear of the first mentioned pair of elliptical gears, andadapted to be coupled to said hub, and means for coupling said gears tocause the pattern cylinder to be revolved in a forward or backwarddirection, substantially as set forth.

4. In a loom, the combination with one of the cylinder gears of the headmotion, and the pattern cylinder gear, of intermediate gearing forcommunicating a continuous fast and slow motion to the pattern cylinder,said gearing consisting of a pair of elliptical gears, one of saidelliptical gears fast on the shaft of said cylinder gear, and the otherprovided with a projecting hub, and mounted loosely on a stud, and saidstud, and a circular gear loose on the hub of the last mentionedelliptical gear, and meshing with the pattern cylinder gear, and meansfor coupling the circular gear to the elliptical gear, to cause thepattern cylinder gear to revolve in one direction, and for uncouplingsaid circular gear to allow the pattern cylinder to revolve in the otherdirection, substantially as set forth.

In witness whereof I have hereunto signed my name in the presence of twosubscribing witnesses.

THOS. J. COROOBAN.

Witnesses:

STEPHEN FINNEY, JOHN W. OI-IARA.

